An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Iceland has been so culturally isolated through history since the Vikings, that compared to other Scandinavian counties, people who speak Icelandic can still read the old Norsk sagas.
4
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
You forget 90% of your dreams.
256
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Your thumb is about the same size as your nose.
124